Source: BBC
Brain - Ebola vaccine approved as second jab trialled
Key Highlights

The Johnson & Johnson (J&J) vaccine will be used alongside a vaccine made by Merck, which has already been given to around 250,000 people

J & j's vaccine will be available to adults and children

Merck's could be best used in the middle of an outbreak -

But he said the vaccine " may provide longer-term immunity, and may be associated with fewer side-effects than a live virus vaccine "

BBC News